反应详情

4-Azidobenzyl (4-nitrophenyl) carbonate prepared by a method known in the literature (Bioconjugate Chem. 2008, 19, 714) (3.50 g, 11.1 mmol) was added to a solution of (R)-thiazolidine-4-carboxylic acid (H-Thz-OH) (Compound SP609) (1.48 g, 11.1 mmol) and triethylamine (Et3N) (4.66 ml, 33.4 mmol) in Dimethylformamide (DMF) (11.0 ml) at 0° C. under a nitrogen atmosphere, and the mixture was stirred at room temperature for 19 hours. Formic acid (2.1 ml) was added to the reaction solution, and the mixture was purified by reverse-phase silica gel chromatography (0.1% aqueous formic acid solution/0.1% formic acid-acetonitrile solution) to afford (R)-3-(((4-azidobenzyl)oxy)carbonyl)thiazolidine-4-carboxylic acid (Acbz-Thz-OH) (Compound SP610) (3.17 g, 92%).

1. customthe mixture was purified by reverse-phase silica gel chromatography (0.1% aqueous formic acid solution/0.1% formic acid-acetonitrile solution)